This building is sometimes known as "the package City Hall came wrapped in". It is, believe it or not, an example of a style called "Brutalist". That anyone thought this was a good idea astonishes me.

This banner is currently hanging on the side of Boston City Hall. I don't know how long it will stay there.

You might think you're seeing stitcher errors here, but it's probably due to the wind which was making the banner billow and ripple quite a bit. In reality, the wall behind the banner is not warped in any way.

Shepard Fairey is the artist who created the iconic Obama campaign poster.